Meador et al examined the effects of antiepileptic drug exposure via breastfeeding on cognitive functions at age 6 years among 181 children for whom both breastfeeding and IQ data were available. All mothers in this analysis continued taking drug after delivery. Differential Ability Scales IQ was the primary outcome. See the editorial by Harden.

Morriss et al assess the association between surgery during the initial hospitalization and death or neurodevelopmental impairment of very low-birth-weight infants. See the editorial by Williams et al.